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Microcrystalline material MgCaO powder, microcrystalline material as well as preparation methods and applications of MgCaO powder and microcrystalline material

A technology of microcrystalline materials and powders, which is applied in the direction of calcium/strontium/barium oxide/hydroxide, discharge tubes, electrical components, etc., can solve the problems of small image quality improvement and deterioration, and achieve the improvement of discharge spots, Good protective effect, the effect of improving the problem of freckles

Inactive Publication Date: 2014-11-05
SICHUAN COC DISPLAY DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, calcium oxide (CaO) has the problem of being affected by H2O, CO2 and other ambient gases.
[0005] As for the materials used, most of the materials currently used are magnesium oxide microcrystalline materials, which can only achieve the effect of improving efficiency, improving the speckle of the screen and improving the image quality. Small

Method used

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  • Microcrystalline material MgCaO powder, microcrystalline material as well as preparation methods and applications of MgCaO powder and microcrystalline material
  • Microcrystalline material MgCaO powder, microcrystalline material as well as preparation methods and applications of MgCaO powder and microcrystalline material
  • Microcrystalline material MgCaO powder, microcrystalline material as well as preparation methods and applications of MgCaO powder and microcrystalline material

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Embodiment 1

[0043] Calcium oxide (CaO) and magnesium oxide (MgO) powder are mixed according to the mass ratio x: 1-x, x=0.3, and the compound of CaO and MgO is formed after sintering, that is, the microcrystalline material MgCaO powder; the sintering temperature is 1100°C, The sintering time is 7h, and the MgCaO powder is obtained.

[0044] The microcrystalline material MgCaO powder is white and cubic powder with a particle size of 50nm to 500nm. Specifically, it can improve luminous efficiency, resist speckle and improve display quality.

Embodiment 2

[0047] Calcium oxide (CaO) and magnesium oxide (MgO) powder are mixed according to the mass ratio x: 1-x, x=0.04, and the compound of CaO and MgO is formed after sintering, that is, the microcrystalline material MgCaO powder; the sintering temperature is 1400°C, The sintering time is 4h, and the MgCaO powder is obtained.

Embodiment 3

[0049] Calcium oxide (CaO) and magnesium oxide (MgO) powder are mixed according to the mass ratio x: 1-x, x=0.06, and the compound of CaO and MgO is formed after sintering, that is, the microcrystalline material MgCaO powder; the sintering temperature is 1300°C, The sintering time is 6h, and the MgCaO powder is obtained.

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Abstract

The invention belongs to the field of microcrystalline materials, and in particular relates to microcrystalline material MgCaO powder as well as a preparation method and an application thereof. The microcrystalline material MgCaO powder is characterized in that the specific gravity ratio of Mg, Ca and O in the MgCaO powder is shown as xMg(1-x)CaxO, wherein x is greater than or equal to 0.04 and less than or equal to 0.3; the MgCaO powder is formed by sintering CaO powder and MgO powder. A microcrystalline material is formed after the MgCaO powder is dissolved in a solvent. When the microcrystalline material containing the MgCaO powder is applied into a plasma panel, the low energy band width is maintained while the stable state of environmental gases is kept. The preparation method is low in cost, simple and easy to operate.

Description

technical field [0001] The invention belongs to the field of microcrystalline materials, and in particular relates to microcrystalline material MgCaO powder, microcrystalline material, preparation method and application. [0002] Background technique [0003] In recent years, in the field of display devices, the requirements for high efficiency and low voltage are increasing along with high precision. In order to meet such requirements, plasma display (PDP) adopts the combination of using calcium-doped oxide film layer and increasing Xe partial pressure in discharge gas. However, all of these will lead to aggravation of discharge mottling, deterioration of image quality, and rise of discharge start voltage and sustain voltage, resulting in the opposite result of lowering the driving voltage. [0004] The total width (band width) of the band gap (Band Gap) and electron affinity (Affinity) of calcium oxide (CaO) is as follows figure 1 As shown, it is 1.45eV lower than magne...

Claims

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Application Information

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IPC IPC(8): C01F11/02H01J11/40
Inventor 唐瑒山田新二周辉刘辉严群赵海龙
Owner SICHUAN COC DISPLAY DEVICES
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